court systems and jurisdiction- supreme court sides with walmart

1.     What process did this case have to go through to get to the Supreme Court?

2.     Discuss the differences between a majority opinion, a concurring opinion and a dissenting opinion.

What effect does each type of opinion have on the state of the law in America?

3.     What type of jurisdiction did the federal courts have in this case?

Was it a federal question case or a diversity of citizenship case? Why?